Zn-Crコーティング膜の構成相と耐食性  [in Japanese] Intermetallic Constitution Phases and Corrosion Resistance of Zn-Cr Coatings  [in Japanese]

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Author(s)

    • 〓 崔漢 CHOE Han-Cheol
    • 韓国光陽大学製鉄金属学科および産学官共同研究所 Department of Iron Manufacture and Metallurgical Engineering and Industry-Academy-Government Collaboration Res. Inst., Kwang Yang College
    • 洙 安徳 AHN Duck-Soo
    • 韓国浦項綜合製鉄株式会社技術研究所光陽圧延研究グループ Kwang Yang Rolling Products Research Group, Technical Research Laboratories
    • 衍 黄金 HWANG Keum-Yeon
    • 韓国株式会社河南電子付設研究所製品開発チーム Department of Research and Development, Hanam Electronics Co., Ltd.

Abstract

It has been investigated constitution phases and corrosion resistance of Zn-Cr coatings fabricated by electroplating method and electron-beam physical vapor deposition method (EB-PVD).<BR>The electroplated Zn-Cr alloy consisted mainly of η′-Zn phase for the lower Cr content than 7.9 mass%Cr and γ′-ZnCr phase for the higher Cr content. In the Zn-Cr coating fabricated by EB-PVD the γ′-ZnCr phase appeared clearly at 3 mass%Cr and it became the sole phase at 50 mass%Cr. The amount of η′-Zn phase decreased obviously with increasing Cr content when it exceeded 15 mass%Cr.<BR>The electrochemical measurement of the electroplated Zn-Cr film has shown corrosion potential of about −1000 mV vs. SCE. The current density of active region and the amount of dissolved Zn and Cr decreased significantly with increasing Cr content. The electrochemical characteristics of Zn-Cr alloy fabricated by EB-PVD have shown that the alloy of 50 mass%Cr had the highest corrosion potential(−500 mV) and the lowest critical passive current density than that of the electroplated.

Journal

  • Journal of the Japan Institute of Metals and Materials

    Journal of the Japan Institute of Metals and Materials 66(5), 438-444, 2002-05-20

    The Japan Institute of Metals and Materials

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Codes

  • NII Article ID (NAID)
    10008832954
  • NII NACSIS-CAT ID (NCID)
    AN00062446
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    00214876
  • NDL Article ID
    6178940
  • NDL Call No.
    Z17-314
  • Data Source
    CJP  NDL  J-STAGE 
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